Articles | Volume 18, issue 16
Biogeosciences, 18, 4773–4789, 2021
https://doi.org/10.5194/bg-18-4773-2021
Biogeosciences, 18, 4773–4789, 2021
https://doi.org/10.5194/bg-18-4773-2021

Research article 24 Aug 2021

Research article | 24 Aug 2021

Disturbance triggers non-linear microbe–environment feedbacks

Aditi Sengupta et al.

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Short summary
Conceptual models link microbes with the environment but are untested. We test a recent model using riverbed sediments. We exposed sediments to disturbances, going dry and becoming wet again. As the length of dry conditions got longer, there was a sudden shift in the ecology of microbes, chemistry of organic matter, and rates of microbial metabolism. We propose a new model based on feedbacks initiated by disturbance that cascade across biological, chemical, and functional aspects of the system.
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